Place the bowl on your work surface. Add the flour and salt to the bowl and combine with the fork. Add the water and stir.
Continue mixing, and eventually the mixture will solidify enough that you can begin kneading it with your hands. If you find the dough is too dry, add a bit more water. If it's too wet, just add more flour.
Knead until fully combined, and then roll out the dough on your work surface with a rolling pin.
Cut out the shapes you’d like with cookie cutters. You can also use items around the home (a pill bottle lid makes a small round shape, for example). Feel free to stack them as well.
Place the dough shapes on a cookie sheet and into the oven at 250 degrees for 2 – 3 hours. It may take longer depending on your oven. Check every 30 minutes until done and let cool completely.
Use the acrylic colors to paint your pins in the designs of your choice.
Add dots with the end of a paintbrush as desired. Dip the end of a small paintbrush in paint, press down directly on the surface, and pull up to create a dot. Let dry. To make your pins more durable, paint a coat of decoupage medium over the top (optional).
Flip the shapes over and add pin backs to them with craft glue. Let dry completely before wearing or gifting.